User blog comment:JayAaerow/Administrative Blog: Finding Sources/@comment-6769189-20150319175451/@comment-967403-20150319190107

Similar means "having a likeness or resemblance", as stated on that page. While it can be, it's not being used like that. If Dante's age was the same as Cobra, then Kamiya would have said "the same" instead of similar. The  writer would not use "similar"  If the character's age is "the same". He would of just said "the same". It looks like an attempt to say we have something definite when it's not.

If you didn't notice, Capcom are not precise on aging as it is. We should not be trying to find a way to gauging what Capcom hasn't provided. They only provide us with estimates. The only thing Kamiya confirmed was that Dante in DMC1 was in his 20's at least.

(Sorry If it looks mean but I'm just bolding my important points)